EFD1000 Installation Manual
DOCUMENT # A-01-126-00 PAGE 86-225 Revision H
© Copyright 2009 Aspen Avionics Inc.
Pin Number Name Input / Output Function
J2-1 COMPOSITE INPUT VOR/LOC Composite input
J2-2 /ILS-ENERGIZE INPUT Active Low input from VHF Nav Rx
J2-3 /Spare-Disc1 INPUT Spare Discrete Input
J2-4 /BACK-CRS-OUT
OUTPUT Open collector output to drive the back
course sense circuit of an autopilot
J2-5 /ILS-ENERGIZE-OUT
OUTPUT Active Low Output when ILS Selected or
GPS Appr Active
J2-6 /FCS-LOC-IN INPUT Low Input from GPS when Appr Selected
J2-7 /OBS-LEG-IN
INPUT Active Low from GPS when GPS OBS
mode selected
J2-8 -DH INPUT Differential –DH input
J2-9 FD-ENGAGED
INPUT Flight Director Engaged (command bars
in view when active)
J2-10 FD-ROLL2 INPUT Roll input for ARC and Bendix
J2-11 +VLOCFLG-OUT INPUT Valid VHF Nav VOR or Localizer signal
J2-12 +GS-IN INPUT Glideslope deviation from VHF Nav Rx
J2-13 +GSFLG-IN INPUT Glideslope flag from VHF Nav Rx
J2-14 FD-PITCH-COM INPUT Pitch Signal common for all FD types
J2-15 FD-ROLL-COM INPUT Roll Signal common for all FD types
J2-16 +UP OUTPUT Vertical output to autopilot (H)
J2-17 +VERT-FLG OUTPUT Vertical output flag (H)
J2-18 +RT OUTPUT Lateral deviation output
J2-19 ACU #1/#2 INPUT Spare Discrete Input
J2-20 COMPOSITE-COM - VOR/LOC common
J2-21 Reserved - Spare Discrete Input
J2-22 Reserved - Spare Discrete Input
J2-23 Reserved - Reserved
J2-24 APPR-ACT
INPUT Active Low input from GPS when GPS
approach mode activated
J2-25 HEADING VALID OUTPUT Active Low Output when Heading Valid
J2-26 +DH INPUT Differential +DH Input
J2-27 FD-VALID INPUT Flight Director Active High valid
J2-28 FD-PITCH2 INPUT Pitch Input for ARC Flight Director
J2-29 Reserved -
J2-30 -VLOCFLG-OUT - Common
J2-31 -GS-IN INPUT Glideslope deviation from VHF Nav Rx
J2-32 -GSFLG-IN INPUT Glideslope flag from VHF Nav Rx
J2-33 FD-PITCH1 INPUT Pitch Input for Century and Bendix FD
J2-34 FD-ROLL1 INPUT Roll Input for Century FD
J2-35 +DN OUTPUT Vertical output to autopilot (L)
J2-36 -VERT-FLG OUTPUT Vertical output flag (L)
J2-37 +LT OUTPUT Lateral deviation output
Figure 8.5 - J2 Connector (as viewed from front of unit)